<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Test</title>
    <style>
        .center{
            margin: 0 auto;
        }
        .f1{

        }
        .f2{

        }
        .f1>.left{
            width: 611px;
            height: 376px;
            background-color: grey;
            margin-right: 10px;
            float: left;
        }
        .f1>.right{
            width: 375px;
            height: 376px;
            background-color: yellow;
            float: left;
        }

        .f2>.left{
            width: 366px;
            height: 233px;
            background-color: pink;
            float: left;
        }
        .f2>.card{
            width: 198px;
            height: 233px;
            background-color: blue;
            float: left;
        }
    </style>
</head>
<body>
<!-- 设置最外层功能模块 -->
   <div class="main">
<!--   版心：固定宽度且居中的部分    -->
       <div class="center">
           <div class="f1">
               <div class="left"></div>
               <div class="right"></div>
           </div>
       </div>

       <div class="f2">
           <div class="left"></div>
           <div class="card"></div>
           <div class="card"></div>
           <div class="card card3"></div>
       </div>

   </div>
</body>
</html>